Boosting applications with performance testing

Imagine it’s Black Friday, one of the year’s busiest shopping days. Customers are flooding your online store, eager to grab deals and fill their carts with discounts they’ve been waiting for all year. But as they click through the pages and add items to their carts, something starts to happen—pages slow down, some users are met with loading errors, and a few even get completely timed out. What should have been a record-breaking day for sales has turned into a frantic scramble to restore performance, leaving customers frustrated and likely to take their business elsewhere.

This scenario sheds light on the importance of performance testing. While functional tests ensure our application works, performance tests ensure it works well under pressure. They verify that our system meets expected responsiveness, stability, and scalability standards under different workloads. Performance testing allows us to identify...